John geary



(No Model.)

J. GEARY.

ELECTRIC GAS LIGHTING BURNER.

N0. 401,153. Patented Apr. 9, 1889.

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UNITED STATES PATENT OFFICE.

JOHN GEARY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO J. ELLIOTTSIlAlV, OF SAME PLACE.

ELECTRIC GAS-LIGHTING BURNER.

SPECIFICATION forming part of Letters Patent No. 401,153, dated April 9,1889.

Application filed February 5, 1889. Serial No. 298,721. (No model.)

To all whom it may concern:

Be it known that 1, JOHN GEARY, a citizen of the United States, residingin the city and county of Philadelphia, State of Pennsylvauia, have invented certain new and useful Improvements in Electric Gas-LightingBurners; and I do hereby declare that the following is a full, clear,and exact description of the invention, reference being had to theaccompanying drawings.

My invention has relation to automatic electric gas-lighting burners,and has for its object to improve the construction and increase theefficiency of such burners.

Heretofore in burners of the above-mentioned character it has beencustomary, in some instances, to provide separate armatures for the twopairs of electro-magnets, said ar matures imparting a rotary motion tothe gas cook or key, in order to turn on and shut off the gas, one ofthese armatures communicating motion to the movable electrode. In othercases it has been the custom to provide a single armature for both pairsof magnets for accomplishing the turning on and oif of the gas and theproduction of the necessary spark; but in all these cases the perfectshutting off of the gas and absolute freedom from leakage areimpossibilities, for the reason that the gas cocks or keys are given avery slight 1novementsay an eighth of a full turn-and the openings forthe passage of gas in said cocks, which register with correspondingopenings in a plug or the like in the gas-tube, when the gas is to beadmitted to the burner, barely clear each other when the flow of isdesired to be shut off. Therefore leakage is the result.

My improvements consist in a single armature for both pairs of magnets,which is supported below the plane of its lower edge on trunnions, andhaving pivoted to one of its edges a pair of cam arms or levers, saidcam-levers resting 011 adjustable shoulders near their pivotal points,and at their other ends being held in operative relation with the forksor arms of the gas cook or key in the burner-tube, so that a very slightdepression of either side of the armature will impart agreatly-increased movement of the gas-cock-say onequarter of a fullturn. For this reason I am enabled to employ a large circular opening inthe gascock and a similar opening in the burnertube, and said openingswill more than clear each other, the effect being as good as where a gascook or key is manually operated in the usual manner. Thus the shuttingoff of the gas is perfectly accomplished without the slightestpossibility of there being any leakage.

My im pro vem ents further consist in the peculiar construct-ion andcombination of parts, as hereinafter fully described and claimed.

In the drawings, Figure 1 is a side elevation of my improvements appliedto an armature and in position for operation. Fig. 2 is an edge view ofthe same. Fig. 3 is a plan view of armature and cam-levers and gascock,with the burner-tube in section. Fig.4 is a vertical transverse section,partly broken away, showing opening in the gas-cock, &c.

Referring to said drawings, A represents the iron disk secured on theburner-tube B, and sustaining the magnets C O, which magnets have thecores 0 c, and the burner-tube supports the tip l3 and the insulatedcollar 1), supporting the fixed electrode 1), all of which are of usualconstruction and need not be particularly described. Near the upper endof tube B there is formed an enlargement or flange, D which forms aguide for the movable electroderod D, and the lower surface of saidflange affords a shoulder for the spiral spring (I, which is alsoshouldered against the 8 5 slide d, said slide being adjustably securedto the rod D by screw (1 so that the tension in said spring can bechanged when desired. The inner surface of slide d is curvedconcentrically with the burner-tube B, said tube forming a slideway forthe slide d, in order that the rod D may have freedom of movement inresponse to the movement of the armature E when the gas is to be turnedon and the spark made. This slide also prevents the 9 5 turning of saidelectrode-rod in the guide. Armature E is provided with trunnions e 6below the plane of its under surface, which trunnions are pivoted onscrew 6 and bolt 6 passing partly into the burner-tube.

The purpose of pivoting the armature, as above explained, is to get anextended movement of the ends of the armature without the same gettingvery far away from the magnet-poles, so as to get as greata movement inthe cam-levers F F as is possible, the movement of the armature in thiscase being more in the nature of a radial curve, or at an angle with thesurface of the poles, than in an axial direction, or directly away fromsaid poles. Said armature also encircles the burner-tube, as usual.

Armature E has pivoted to one of its edges on screws ff the cam-levers FF, formed with curved notches f f in their under edges, in which rest,when said levers are depressed, the adjusting-screws g g, havingjam-nuts g g thereon, and are threaded in the baseplate G. These leversF F are also formed with rounded ends f f-"', which bear against andimpart movement, when the armature is actuated, to the forks or arms h hof the gascock H. This gas-cock is of usual form, but has an enlargedcircular opening, 77?, registering with similar openings in theburner-tube, instead of narrow slits. When gas-cock H is in the positionshown in Fig, 4, the gas has free access to the burner-tip, while whenin the position shown in Fig. 5 said openings are perfectly and forquite a distance clear of each other, so that leakage of gas throughsaid openings is absolutely impossible, because of the increasedrotation of the gascock H through the medium of the cam-levers.

lVith the pivoting of the cam-levers at their ends, and the cam portionsf f near said pivotal points resting on the screws g g, a single slightmovement of armature E imparts three times the extent of said movementto the ends f f of the cam-levers, which ends, being rounded, contactwith the forks of the gas-cock, and by reason of said forks riding onsaid rounded ends an increased rotation is the result, as abovesuggested.

By reference to Fig. 1 of the drawings, it will be observed that whenone side of armature E is depressed the convex part of the cam portion f3 in lever F rests on the rounded end of screw g, which screw limits theupward movement of said lever, while the concave portion of notch f inlever F rests 011 the rounded end of screw g, which screw limits thedownward movement of said lever. Thus, it will be understoed, thesescrews not only limit the movements of the cam-levers, but also serve asshoulders for said levers to ride on in order to produce such movements.

It is obvious that other forms of shoulders for the cam-levers to rideon can be employed to advantage-for instance, a pair of rollerssupported in yokes, which yokes may be adjustably secured to thebed-plate or otherwise.

It will also be observed that the magnets are irregularly disposedaround the burnertube; this is done merely to allow the camlevers freeaccess to the forks of the gas-cock; also, that while I have shown theuse of the above-mentioned forks, a solid key-handle, similar to theordinary thumb key, but smaller, can be used for the purpose of theforks.

What I claim as my invention is as follows:

1. In an electric gas-lighting burner, the

combination, with the magnets thereof, of anarmature having pivotedthereon two camlevers riding on shoulders and operating to impart rotarymotion to the gas-cock, as and for the purpose set forth.

2. In an electric gas-lighting burner, the combination, with the magnetsthereof, of an armature pivoted at its center, and having pivoted on oneof its edges two cam-levers riding on the ends of adjusting-screws inthe bed-plate and imparting rotary motion to the gas-cock, as and forthe purpose set forth.

3. In an electric gas-lighting burner, the combination, with themagnets, the movable electrode, and the gas-cock thereof, of an armaturepivoted below the plane of its lower surface, in order to secure amovement of the same in the direction of a radial curve, as and for thepurpose set forth.

4. In an electric gas-lighting burner, the combination, with the movableelectrode-rod D, sliding in the flange b on the burner-tube B, of theadjustable slide cl, sliding on said tube and secured to said rod byscrew d preventing the same from turning, and serving to admit ofchanging the tension of the spiral spring cl, encircling rod D, andsustained between said flange and slide, as and for the purpose setforth.

5. In an electric gas-lighting burner, the combination, with the magnetsthereof, of an armature, E, provided with trunnions e e below the planeof its lower surface, said trunnions being secured on the screw 6 andbolt 6 passing into the burner-tube, as and for the purpose set forth.

6. In an electric gas-lighting burner, the combination, with the magnetsthereof, of an armature, E, having pivoted on the edge thereof on screwsff the cam-levers F F, provided with the cam portions f f in their underedges, and the rounded ends f f, engaging with the gas-cock, said leversat their cam portions resting and riding on the ends of the adjusting-screws g g in the bed-plate Gwhen the armature is actuated andcommunicating rotary motion to said gas-cock, as and for the purpose setforth.

7. In an electric gas-lighting burner, the combination, with the magnetsthereof, of the armature E, havingthe trunnions e e, pivoted on thescrew and bolt 6 e below the plane of the lower edge of said armature,the latter having pivoted on its edge on screws f f the cam-levers F F,provided with the cam portions or notches f 2 f, for engagement with theends of the adjusting-screws g g in have hereunto set my hand this 30thday of the bed-plate G, the outer ends, f' f, of said January, A. D.1889. levers engaging with the gas-cock H in the JOHN (E kRY.burner-tube and transmlttlng rotary motlon T L 5 to said gaseoek, as andfor the purpose set Vitnesses:

forth. J. ALBERT DAVIS,

In testimony that I claim the foregoing I R. DALE SPARHAWK.

